docs: def list_containers(self):
          """
          List all available docker containers.
  
          Container objects returned from this methods will contain a limited
          amount of metadata in property `short_metadata`. These are just a subset
          of `.inspect()`, but don't require an API call against dockerd.
  
          :return: collection of instances of :class:`conu.DockerContainer`
          """
          result = []
          for c in self.d.containers(all=True):
              name = None
              names = c.get("Names", None)
              if names:
                  name = names[0]
              i = DockerImage(None, identifier=c["ImageID"])
              cont = DockerContainer(i, c["Id"], name=name)
              # TODO: docker_client.containers produces different metadata than inspect
              inspect_to_container_metadata(cont.metadata, c, i)
              result.append(cont)
          return result